Leaf-spring for vehicles.



P. s. mason.- LEAF SPRING ron VEHICLES.

APPLICATION FILED DEC-6.1916.

Patented Aug. 7, 1917.

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INVENTOR J e/e1 6: La sa n. BY

P.S.. LARSON.

LEAF SPRING FOR VEHICLES. APPLICATION FILED DEC.6.19|6.

1,235,703. r FatentedAug. 7,1917.

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wnvron' Pate! lad/sol! monm trated in the PETER s. mmson, or omrmrrll, WASHINGTON.

LEAF-SPRING- FOR VEHICLES.

Specification of Letters Patent.

Patented Aug. '7, 1917;

Application filed December 6, 1918. Serial No. 135,285.

7 '0 all whom it may concern Be it known that I, Ir'rnn S. LARSON, a citizen of the United States, residing at Olympia, in the county of Thurston and State of \Vashington, have invented a certain new and useful Improvement in Leaf- Springs for Vehicles, of which the followin is a specification.

ily invention relates to improvements in leaf springs for vehicles, and the object of my invention is to provide a spring, any one of the leaves of which can be easily replaced if broken, and which spring shall be adapted to bear the load to its destination irrespective of a broken leaf. Further my object is to provide a spring which shall distribute the force of jars throughout the length of a spring frame associated therewith and to provide a spring so disposed that the engine drive shafts are relieved of their. usual strain incident to sudden jars.

I accomplish these objects by devices illusaccompanying drawings wherein F igure 1 is a side elevation of one form of a vehicle spring embodying my in-- ventioii; Fig. 2 is an enlarged fragmentary plan viewofthe same; Fig. 3 is an enlarged fragmentary view of the. sonic ill side elevation; Fig. 4 is an cnlaijgqiview of a detail of the same in cross sdction on broken line 4, 4:; Figs. 5 and (i are enlarged views of other details of the same in cross section on broken lines 5, 5 and 6, (3 respectively; Fig. 7 is a plan view of my invention applied crosswise of the vehicle; Fig. 8 is a view in front elevation of the structure shown in Fig. 7.

Referring to the drawings, throughout which like refe rence numerals designate like parts, main metal leaves 9 and 10 of the front end of a vehicle are secured together at theirouter ends' bya bolt or rivet 11 and the inner ends of said leaves together with the ends of reinforcing leaves Y12 and 13 are secured by clamps 14L and 15 respectively to the ends of bars 16 and 17 respectively, which constitute a frame for the spring members of my invention. The rear end parts 18 and 19 of my invention are in construction similar to the corresponding parts of the front end. Intermediate of front and rear end is disposed a main spring 20. The

main spring 20, is slotted on its end, and

secured by clamps 21 and 22 which are held securely fixed to the bar 17 by bolts 23 and 24 which bolts extend through said slotted ends to the bar- 17 Further, the main which aflords an easy riding spring.

spring 20 and the reinforcing leaves 25, are secured to the bar 16 by a clamp 26. The spring frame is secured tothe chassis 27 by the bolts 28.

The bolt 11 clamps themain leaves 9 and 10-upon a wedge shaped block 29, said block thus lessening the strain 'on. the ends of said leaves. The reinforcing leaves 25 have a main point of hearing by insertin the pin 30 in a transverse groove in the in 16 so that a part of the pin is above the surface of the bar 16. applying any invention as shown in Figs. 7 and 8, the spring frame is identical in form of construction with the spring frame of Figs. 1 to (i inclusive.

The operation of my invention may be described as follows: Applied lengthwise of the vehicle body, it is manifest that slight Jars due to the unevenness of the ground In the modified plan of will be taken up by the end spring, sincej the axle bearing is in close proximity to the same, but any considerable shock will cause. the intermediate SPIIII" to be depressed, such depression being possi 1e owi g" qfi fact that the ends of said intermediate spring ime .slotted. The intermediate spring takesl the a high degree of sensitiveness is attained?" If one of the leaves 12, 13 or 26 broken it can manifestly be readily replace 7 by simply loosening the bolt of its respective clamp. If a main leaf, such as 9 or 10, bccomes broken, it would only be necessary to secure to the ends a clamp carried, for such emergency-so that the said ends may be boundtogether the clamp being of any common form. If the main leaf 2O become" should become broken, the other leaves and the end springs would carry the load to its destination.

While I have shown only one intermediate spring it is obvious a plurality of shorter;

springs of like construction can be used be-. 10b tween the bars 16 and 17-. The chassis itself may be the bar 16. Much spring trouble is;

due to the breaking of pins and hangers and their absencei'n the construction shown removes danger from this cause. However, the

vice herein described is my preferred form and clearly modifications can be made without departing from the principle of my 1nvention.

leaf; spring, i

I claim: y

l. A vehicle spring embodying two parallel bars secured together at their endsby a quarter elliptical leaf spring and a straight movaibly' clamped to said bars, and a semiellip'tical leaf' spring operatively disposed in alinement between said bars, one of said bars being adapted to be fastened to the chassis of a vehicle and the other .of said bars being adapted to: be fastened to the axles of a vehicle.

2. A vehicle spring embodylng two parallel bars secured together at their ends by a quarter elliptical leaf spring and a straight eaf spring, both bein removably clamped to said bars, and a semi-elliptical leaf spring operatively disposed in alinement between said bars at a point intermediate of the ends of said bars, the center of said semi-elliptical leaf spring being removably clamped in a fixed position to one of said bars and the ends ofsaid-spring being slidablv connected to thek' 'ther of said bars.

both of said springs being re-' -ed to carry the load of leaves of said springs being separately re- 3. A vehicle spring embodying two parallel bars associated with two pairs of'end springs and a semi-elliptical leaf spring, said end springs beingv composed ofleaf springs removably clamped to the end of said bars, and the semi-elliptical leaf spring being removably clamped at-Ia, point midway of its length in a fixed position to one of said bars, and with its ends in slidable engagement with the other of said bars, any

Y one of the leaves of said springs being sepaplaceable. In witness whereof, I hereunto subscribed ilgl oname this 27th day ofNovember, A. D;

5 PETERS. LARSON.

the vehicle, all the, a 

